CVE-2021-24765: The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header valu

Q: How do I fix CVE-2021-24765?

perfect survey: upgrade to 1.5.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-24765 being exploited?

CVE-2021-24765 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24765 affect?

CVE-2021-24765 affects perfect survey. Severity is medium (CVSS 6.1). The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header value before outputting it in the statistic page when the Anonymize IP setting of a survey is turned off, leading to a Stored Cross-Si

Q: How urgent is CVE-2021-24765?

Priority 44/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-24765 is a medium-severity flaw (CVSS 6.1) affecting perfect survey. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header value before outputting it in the statistic page when the Anonymize IP setting of a survey is turned off, leading to a Stored Cross-Site Scripting issue

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-02-01
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: getperfectsurvey

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-02-01 13:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

getperfectsurvey perfect survey UPGRADE

Affected: < 1.5.2

Fixed in: 1.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy perfect-survey || rpm -q perfect-survey || perfect-survey --version

2. UPGRADE to 1.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade perfect-survey

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perfect-survey

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24765?

perfect survey: upgrade to 1.5.2. Exact commands for each OS are on this page.

Is CVE-2021-24765 being exploited?

CVE-2021-24765 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24765 affect?

CVE-2021-24765 affects perfect survey. Severity is medium (CVSS 6.1). The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header value before outputting it in the statistic page when the Anonymize IP setting of a survey is turned off, leading to a Stored Cross-Si

How urgent is CVE-2021-24765?

Priority 44/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24764 MEDIUM 6.1 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not sanitise and escape multiple parameters (id and filt
CVE-2021-24763 HIGH 8.8 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not have proper authorisation nor CSRF checks in the sav
CVE-2021-24762 CRITICAL 9.8 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter be

References

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